The clue is in your post. There has never been Android 4.1.9 on the S3. I've seen a couple of videos on YouTube of this so-called OS and it is obvious that it is fake because the cover on the phone states 'Super HDMA.LED (what is that?), apps are all wrong, the box is wrong etc. It looks as though you bought a fake, it is little wonder you are having problems.

I ALMOST believed you. When I read the first part of you post it sounded possible although I hadn't heard of it before. But then you went too far and claimed the exact same thing happened again to your replacement. NO !

I've Bought one of these phones I must say it is beautiful in terms of looks and usage. My biggest problem is after two weeks whenever I lock the screen and try to unlock it I have to cross my fingers because more often than I would like the screen comes up black the phone still works I hear all the bells and whistles but that is it. Most times a battery pull will fix it but doing 5 or more to get it started is too much has any one else experienced this. I got a replacement and this new one did the same thing although it took one week to mess up.

chriso, 18 Apr 2013Can you block some one from sending you sms if you are using S3just to add on to freefaller guideline:
open messaging>>>menu>>>setting>­>>(scroll down)spam messaging settings>> spam settings
-register number as spam
-register phrase as spam
-block unknown senders

Freefaller, 18 Apr 2013@ Dee
Oh, you've got 'Driving mode' on. I have that OFF, it was doing my head in ("Scr... moreYeah, that's right!
I bought the S3 car holder, so I can use the phone while driving and I have Driving Mode on!

chriso, 18 Apr 2013Can you block some one from sending you sms if you are using S3That's right! there are so much SETTING for SMS about what you can do with it.I have S3 almost a year and I still haven't touch most of the SETTING on the phone yet.

Aalam, 18 Apr 2013i am planning to buy s3 within this week. i only want to know about this phone is that it has ... moreno,actually 1gb dy enough n quite fast dy, s3 is awesome , when u use it for a time, u sure will like it, if u got more money, u can choose for note